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PROJECT: RITEAID #5231 - EVERETT, WA <br /> EROSION CONTROL HYDROGRAPH DATA <br /> ERO Event Summary <br /> Event !Peak Q(cfs)iPeak T(hrs);Hyd Vol (acft) Area (ac)1Method;Raintype <br /> 6 mo 0.2072 , 8.20 ; 0.0888 : 2.1500 1 SCS ;TYPE1A <br /> 2 year 1 0.4487 1 8.17 , 0.1761 1 2.1500 ! SCS ,TYPE1A <br /> {10 year 0.7718 ' 8.17 0.2928 ; 2.1500 ' SCS 1TYPE1A <br /> 100 year; 1.2405 1 8.17 , 0.4652 ; 2.1500 SCS TYPE1A <br /> Record Id: ERO <br /> iDesign Method r SCS iRainfall type ' TYPE1A <br /> 1Hyd Intv 10.00 min 'Peaking Factor ; 484.00 <br /> , ! , <br /> !Abstraction Coeff 0.20 <br /> 1Pervious Area I 2.15 ac 1DCIA 0.00 ac <br /> ;Pervious CN 94.00 DC CN 0.00 <br /> !Pervious TC ' 31.05 min 1DC TC 0.00 min <br /> Pervious CN Calc <br /> Description SubArea ' Sub cn <br /> . ! <br /> DISTURBED SOIL , 2.15 ac 94.00 <br /> Pervious Composited CN (AMC 2) ; 94.00 <br /> Pervious TC Calc <br /> '! Type Description , <br /> Length iSlope i Coeff , Misc : TT <br /> 1700 <br /> Sheet <br /> !Cultivated Soil w/ residue cover(s>20%)..: :200.00 1 1.5CP/0 1 55 '30 40 <br /> !110. • • <br /> .1 10.17 1ft in 1min <br /> 1 <br /> , <br /> Channel <br /> Earth-lined (n=0.025) 180.00 ft 11.00% 0.0250 ; 0.65 min <br /> , : ! <br /> Pervious TC 31.05 <br /> min Terraforma Design Group, Inc. a <br />